427426840 has 16 divisors (see below), whose sum is σ = 961710480. Its totient is φ = 170970720.

The previous prime is 427426829. The next prime is 427426859. The reversal of 427426840 is 48624724.

It is a self number, because there is not a number n which added to its sum of digits gives 427426840.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5342796 + ... + 5342875.

It is an arithmetic number, because the mean of its divisors is an integer number (60106905).

Almost surely, 2^427426840 is an apocalyptic number.

427426840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

427426840 is an abundant number, since it is smaller than the sum of its proper divisors (534283640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

427426840 is a wasteful number, since it uses less digits than its factorization.

427426840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10685682 (or 10685678 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 37.

The square root of 427426840 is about 20674.3038576877. The cubic root of 427426840 is about 753.2756519040.

The spelling of 427426840 in words is "four hundred twenty-seven million, four hundred twenty-six thousand, eight hundred forty".